Vulnerability Monitor

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CVE-2020-25632

A flaw was found in grub2 in versions prior to 2.06. The rmmod implementation allows the unloading of a module used as a dependency without checking if any other dependent module is still loaded leading to a use-after-free scenario. This could allow arbitrary code to be executed or a bypass of Secure Boot protections. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.

Published

2021-03-03T17:15:11.660

Last Modified

2024-11-21T05:18:17.340

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 8.2 (HIGH)

CVSSv2 Vector

AV:L/AC:L/Au:N/C:C/I:C/A:C

  • Access Vector: LOCAL
  • Access Complexity: LOW
  • Authentication: NONE
  • Confidentiality Impact: COMPLETE
  • Integrity Impact: COMPLETE
  • Availability Impact: COMPLETE
Exploitability Score

3.9

Impact Score

10.0

Weaknesses
  • Type: Secondary
    CWE-416
  • Type: Primary
    CWE-416
Affected Vendors & Products
Type Vendor Product Version/Range Vulnerable?
Application gnu grub2 < 2.06 Yes
Operating System redhat enterprise_linux 7.0 Yes
Operating System redhat enterprise_linux 8.0 Yes
Operating System redhat enterprise_linux_server_aus 7.2 Yes
Operating System redhat enterprise_linux_server_aus 7.3 Yes
Operating System redhat enterprise_linux_server_aus 7.4 Yes
Operating System redhat enterprise_linux_server_aus 7.6 Yes
Operating System redhat enterprise_linux_server_aus 7.7 Yes
Operating System redhat enterprise_linux_server_aus 8.2 Yes
Operating System redhat enterprise_linux_server_eus 7.6 Yes
Operating System redhat enterprise_linux_server_eus 7.7 Yes
Operating System redhat enterprise_linux_server_eus 8.1 Yes
Operating System redhat enterprise_linux_server_tus 7.4 Yes
Operating System redhat enterprise_linux_server_tus 7.6 Yes
Operating System redhat enterprise_linux_server_tus 7.7 Yes
Operating System redhat enterprise_linux_server_tus 8.2 Yes
Operating System redhat enterprise_linux_workstation 7.0 Yes
Operating System fedoraproject fedora 33 Yes
Operating System fedoraproject fedora 34 Yes
Application netapp ontap_select_deploy_administration_utility - Yes
References